I give up. Which Drillship or Rig are you referring to??? It doesn't sound like any newly built one I have seen the last 10-15 years heading for the US GoM, or anywhere else for that matter, and I have seen many, both built in Singapore, Korea and China.
They are not "slapt together from cheap steel somewhere in Asia", they are built to the highest standard as required by Class, Flag States and Clients.
The Drilling equipment isn't from the US. Although it is marked "NOV" it is designed and made in Norway: http://www.nov.com/Norway.aspx
DP systems are as you say mostly Kongsberg and, like nearly all electronics it is made from components made all over the world and assembled into the end product somewhere. (Maybe in China, like the IPhone, IPad and almost all other "American" electronic product. I don't know)
The key to it is development of the operative system and software to make it do it's job properly, which is developed in Norway, with service facilities worldwide.
Continuous R&D keeps them the leaders in their business, not only for DPS: https://www.km.kongsberg.com/ks/web/nokbg0237.nsf/AllWeb/5DA9836E54D225B6C12575EC003FC3B5?OpenDocument
Safety equipment are mostly of European origin. Lifeboats are mostly by Norsafe or Schat Harding, but may be produced at facilities in China. Don't know of any US made eqv. I haven't seen any Whittaker Capsules on any new rigs or platforms for many years. (They are banned in many countries)
We all know why they are using FOC register and why they are manned by American when working within US EEZ only. We also know why most of the American Drilling and Construction Contractors have their HQ in Switzerland, UAE or somewhere else comfortable. No need to rip up in that here.
Changing out ABB or Siemens electrical equipment worth million?? Sorry, I don't believe you. Unless you are talking about cheap workboats built in China with the cheapest possible minor components and minimal supervision?
I know that some Korean built Drill ships and MODUs came to Singapore to do modification, or install additional equipment, because Korean yards just built standard designs and were not keen on modifications. But once they left for the US they were fully fitted out as required, valves incl.
BTW: Where do they go to do all these major modification you are talking about?
The saga of the workboats have been hashed over so many times, I don't think it necessary
to repeat it now.
Oh, by the way, I have over 40 years in the business, What about you Christine?